[thirdparty/openssl.git] / demos / ssl / serv.cpp

/* serv.cpp  -  Minimal ssleay server for Unix
   30.9.1996, Sampo Kellomaki <sampo@iki.fi> */


/* mangled to work with SSLeay-0.9.0b and OpenSSL 0.9.2b
   Simplified to be even more minimal
   12/98 - 4/99 Wade Scholine <wades@mail.cybg.com> */

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <memory.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

#include <openssl/rsa.h>       /* SSLeay stuff */
#include <openssl/crypto.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include <openssl/err.h>


/* define HOME to be dir for key and cert files... */
#define HOME "./"
/* Make these what you want for cert & key files */
#define CERTF  HOME "foo-cert.pem"
#define KEYF  HOME  "foo-cert.pem"


#define CHK_NULL(x) if ((x)==NULL) exit (1)
#define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(1); }
#define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(stderr); exit(2); }

void main ()
{
  int err;
  int listen_sd;
  int sd;
  struct sockaddr_in sa_serv;
  struct sockaddr_in sa_cli;
  size_t client_len;
  SSL_CTX* ctx;
  SSL*     ssl;
  X509*    client_cert;
  char*    str;
  char     buf [4096];
  SSL_METHOD *meth;
  
  /* SSL preliminaries. We keep the certificate and key with the context. */

  SSL_load_error_strings();
  SSLeay_add_ssl_algorithms();
  meth = TLS_server_method();
  ctx = SSL_CTX_new (meth);
  if (!ctx) {
    ERR_print_errors_fp(stderr);
    exit(2);
  }
  
  if (SSL_CTX_use_certificate_file(ctx, CERTF, SSL_FILETYPE_PEM) <= 0) {
    ERR_print_errors_fp(stderr);
    exit(3);
  }
  if (SSL_CTX_use_PrivateKey_file(ctx, KEYF, SSL_FILETYPE_PEM) <= 0) {
    ERR_print_errors_fp(stderr);
    exit(4);
  }

  if (!SSL_CTX_check_private_key(ctx)) {
    fprintf(stderr,"Private key does not match the certificate public key\n");
    exit(5);
  }

  /* ----------------------------------------------- */
  /* Prepare TCP socket for receiving connections */

  listen_sd = socket (AF_INET, SOCK_STREAM, 0);   CHK_ERR(listen_sd, "socket");
  
  memset(&sa_serv, 0, sizeof(sa_serv));
  sa_serv.sin_family      = AF_INET;
  sa_serv.sin_addr.s_addr = INADDR_ANY;
  sa_serv.sin_port        = htons (1111);          /* Server Port number */
  
  err = bind(listen_sd, (struct sockaddr*) &sa_serv,
	     sizeof (sa_serv));                   CHK_ERR(err, "bind");
	     
  /* Receive a TCP connection. */
	     
  err = listen (listen_sd, 5);                    CHK_ERR(err, "listen");
  
  client_len = sizeof(sa_cli);
  sd = accept (listen_sd, (struct sockaddr*) &sa_cli, &client_len);
  CHK_ERR(sd, "accept");
  close (listen_sd);

  printf ("Connection from %lx, port %x\n",
	  sa_cli.sin_addr.s_addr, sa_cli.sin_port);
  
  /* ----------------------------------------------- */
  /* TCP connection is ready. Do server side SSL. */

  ssl = SSL_new (ctx);                           CHK_NULL(ssl);
  SSL_set_fd (ssl, sd);
  err = SSL_accept (ssl);                        CHK_SSL(err);
  
  /* Get the cipher - opt */
  
  printf ("SSL connection using %s\n", SSL_get_cipher (ssl));
  
  /* Get client's certificate (note: beware of dynamic allocation) - opt */

  client_cert = SSL_get_peer_certificate (ssl);
  if (client_cert != NULL) {
    printf ("Client certificate:\n");
    
    str = X509_NAME_oneline (X509_get_subject_name (client_cert), 0, 0);
    CHK_NULL(str);
    printf ("\t subject: %s\n", str);
    OPENSSL_free (str);
    
    str = X509_NAME_oneline (X509_get_issuer_name  (client_cert), 0, 0);
    CHK_NULL(str);
    printf ("\t issuer: %s\n", str);
    OPENSSL_free (str);
    
    /* We could do all sorts of certificate verification stuff here before
       deallocating the certificate. */
    
    X509_free (client_cert);
  } else
    printf ("Client does not have certificate.\n");

  /* DATA EXCHANGE - Receive message and send reply. */

  err = SSL_read (ssl, buf, sizeof(buf) - 1);                   CHK_SSL(err);
  buf[err] = '\0';
  printf ("Got %d chars:'%s'\n", err, buf);
  
  err = SSL_write (ssl, "I hear you.", strlen("I hear you."));  CHK_SSL(err);

  /* Clean up. */

  close (sd);
  SSL_free (ssl);
  SSL_CTX_free (ctx);
}
/* EOF - serv.cpp */
Commit	Line	Data
d02b48c6 RE	1	/* serv.cpp - Minimal ssleay server for Unix
	2	30.9.1996, Sampo Kellomaki <sampo@iki.fi> */
	3
054009a6 BM	4
	5	/* mangled to work with SSLeay-0.9.0b and OpenSSL 0.9.2b
	6	Simplified to be even more minimal
	7	12/98 - 4/99 Wade Scholine <wades@mail.cybg.com> */
	8
d02b48c6	9	#include <stdio.h>
054009a6 BM	10	#include <unistd.h>
054009a6 BM	11	#include <stdlib.h>
d02b48c6 RE	12	#include <memory.h>
	13	#include <errno.h>
	14	#include <sys/types.h>
	15	#include <sys/socket.h>
	16	#include <netinet/in.h>
	17	#include <arpa/inet.h>
	18	#include <netdb.h>
	19
7ebf7674	20	#include <openssl/rsa.h> /* SSLeay stuff */
dd3c43c5 BM	21	#include <openssl/crypto.h>
	22	#include <openssl/x509.h>
	23	#include <openssl/pem.h>
	24	#include <openssl/ssl.h>
	25	#include <openssl/err.h>
d02b48c6	26
054009a6 BM	27
	28	/* define HOME to be dir for key and cert files... */
	29	#define HOME "./"
	30	/* Make these what you want for cert & key files */
	31	#define CERTF HOME "foo-cert.pem"
	32	#define KEYF HOME "foo-cert.pem"
	33
d02b48c6 RE	34
	35	#define CHK_NULL(x) if ((x)==NULL) exit (1)
	36	#define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(1); }
	37	#define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(stderr); exit(2); }
	38
	39	void main ()
	40	{
	41	int err;
	42	int listen_sd;
	43	int sd;
	44	struct sockaddr_in sa_serv;
	45	struct sockaddr_in sa_cli;
054009a6	46	size_t client_len;
d02b48c6 RE	47	SSL_CTX* ctx;
	48	SSL* ssl;
	49	X509* client_cert;
	50	char* str;
	51	char buf [4096];
054009a6 BM	52	SSL_METHOD *meth;
054009a6 BM	53
d02b48c6 RE	54	/* SSL preliminaries. We keep the certificate and key with the context. */
	55
	56	SSL_load_error_strings();
054009a6	57	SSLeay_add_ssl_algorithms();
32ec4153	58	meth = TLS_server_method();
054009a6 BM	59	ctx = SSL_CTX_new (meth);
	60	if (!ctx) {
	61	ERR_print_errors_fp(stderr);
	62	exit(2);
	63	}
d02b48c6	64
054009a6 BM	65	if (SSL_CTX_use_certificate_file(ctx, CERTF, SSL_FILETYPE_PEM) <= 0) {
	66	ERR_print_errors_fp(stderr);
	67	exit(3);
	68	}
	69	if (SSL_CTX_use_PrivateKey_file(ctx, KEYF, SSL_FILETYPE_PEM) <= 0) {
	70	ERR_print_errors_fp(stderr);
	71	exit(4);
	72	}
	73
	74	if (!SSL_CTX_check_private_key(ctx)) {
	75	fprintf(stderr,"Private key does not match the certificate public key\n");
	76	exit(5);
	77	}
	78
d02b48c6 RE	79	/* ----------------------------------------------- */
	80	/* Prepare TCP socket for receiving connections */
	81
	82	listen_sd = socket (AF_INET, SOCK_STREAM, 0); CHK_ERR(listen_sd, "socket");
	83
16f8d4eb	84	memset(&sa_serv, 0, sizeof(sa_serv));
d02b48c6 RE	85	sa_serv.sin_family = AF_INET;
	86	sa_serv.sin_addr.s_addr = INADDR_ANY;
	87	sa_serv.sin_port = htons (1111); /* Server Port number */
	88
	89	err = bind(listen_sd, (struct sockaddr*) &sa_serv,
	90	sizeof (sa_serv)); CHK_ERR(err, "bind");
	91
	92	/* Receive a TCP connection. */
	93
	94	err = listen (listen_sd, 5); CHK_ERR(err, "listen");
	95
	96	client_len = sizeof(sa_cli);
	97	sd = accept (listen_sd, (struct sockaddr*) &sa_cli, &client_len);
	98	CHK_ERR(sd, "accept");
	99	close (listen_sd);
	100
	101	printf ("Connection from %lx, port %x\n",
	102	sa_cli.sin_addr.s_addr, sa_cli.sin_port);
	103
	104	/* ----------------------------------------------- */
	105	/* TCP connection is ready. Do server side SSL. */
	106
	107	ssl = SSL_new (ctx); CHK_NULL(ssl);
	108	SSL_set_fd (ssl, sd);
	109	err = SSL_accept (ssl); CHK_SSL(err);
	110
	111	/* Get the cipher - opt */
	112
	113	printf ("SSL connection using %s\n", SSL_get_cipher (ssl));
	114
	115	/* Get client's certificate (note: beware of dynamic allocation) - opt */
	116
	117	client_cert = SSL_get_peer_certificate (ssl);
	118	if (client_cert != NULL) {
	119	printf ("Client certificate:\n");
	120
054009a6	121	str = X509_NAME_oneline (X509_get_subject_name (client_cert), 0, 0);
d02b48c6 RE	122	CHK_NULL(str);
d02b48c6 RE	123	printf ("\t subject: %s\n", str);
ef0ab7f9	124	OPENSSL_free (str);
d02b48c6	125
054009a6	126	str = X509_NAME_oneline (X509_get_issuer_name (client_cert), 0, 0);
d02b48c6 RE	127	CHK_NULL(str);
d02b48c6 RE	128	printf ("\t issuer: %s\n", str);
ef0ab7f9	129	OPENSSL_free (str);
d02b48c6 RE	130
	131	/* We could do all sorts of certificate verification stuff here before
	132	deallocating the certificate. */
	133
	134	X509_free (client_cert);
	135	} else
	136	printf ("Client does not have certificate.\n");
	137
	138	/* DATA EXCHANGE - Receive message and send reply. */
	139
	140	err = SSL_read (ssl, buf, sizeof(buf) - 1); CHK_SSL(err);
	141	buf[err] = '\0';
	142	printf ("Got %d chars:'%s'\n", err, buf);
	143
	144	err = SSL_write (ssl, "I hear you.", strlen("I hear you.")); CHK_SSL(err);
	145
	146	/* Clean up. */
	147
	148	close (sd);
	149	SSL_free (ssl);
	150	SSL_CTX_free (ctx);
	151	}
	152	/* EOF - serv.cpp */